The 16ft by 13ft wooden cabin is situated in the exclusive Mudeford Spit, Dorset, and if sold would set a new record.
Estate agents say it is slightly bigger than the neighbouring units - one of which sold a few months ago for the current high mark of £375k.
And the pandemic and rise in staycation breaks have been given as reasons for prices soaring even further.
And the pandemic and rise in staycation breaks have been given as reasons for prices soaring even further.
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